NFL.com cited a source close to Romo as saying the quarterback will sit out and Brandon Weeden will make the start.

The Dallas Morning News reported Saturday that Romo has two fractures of the transverse process in his back. The transverse process is a small bony projection off the right and left side of each vertebrae.

Romo was hurt in the third quarter of Monday's overtime loss to Washington, although he did return for the final series of regulation and Dallas' lone possession of overtime.

The Cowboys initially said Romo had a contusion, but he didn't practice all week and was listed as questionable for this Sunday's game.

If Romo does indeed sit Sunday, he could also miss next week's game against Jacksonville in London. The Cowboys then have a bye in Week 11.

See pictures from the Tampa Bay Buccaneers, Miami Dolphins and Jacksonville Jaguars, plus the rest of Week 8 NFL games